Saturday, December7, 2019
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Marine Weather and Tides
St. Augustine Beach, FL

Version 3.4
NOTICE
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 7:05AMSunset 5:27PM Saturday December 7, 2019 3:38 AM EST (08:38 UTC) Moonrise 2:46PMMoonset 2:40AM Illumination 79% Phase: Waxing Gibbous; Moon at 10 days in cycle
NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.
Marine Forecasts
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AMZ454 Expires:201912071515;;975313 Fzus52 Kjax 070704 Cwfjax Coastal Waters Forecast For Northeast Florida/southeast Georgia National Weather Service Jacksonville Fl 204 Am Est Sat Dec 7 2019 Atlantic Coastal Waters From Altamaha Sound Ga To Flagler Beach Fl Out To 60 Nm. Seas Are Provided As A Range Of The Average Height Of The Highest 1/3 Of The Waves, Along With The Occasional Height Of The Average Highest 1/10 Of The Waves. Amz450-452-454-071515- Coastal Waters From Altamaha Sound To Fernandina Beach Fl Out 20 Nm- Coastal Waters From Fernandina Beach To St. Augustine Fl Out 20 Nm- Coastal Waters From St. Augustine To Flagler Beach Fl Out 20 Nm- 204 Am Est Sat Dec 7 2019
Today..North northeast winds 10 to 15 knots. Seas 2 to 4 feet. Dominant period 4 seconds. Inland waters a moderate chop.
Tonight..Northeast winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 5 seconds. Inland waters choppy. A chance of showers.
Sunday..Northeast winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 6 seconds. Inland waters a moderate chop. A chance of showers.
Sunday night..East northeast winds 10 to 15 knots becoming southwest around 5 knots after midnight. Seas 2 to 4 feet. Dominant period 8 seconds. Inland waters a light chop. A slight chance of showers.
Monday..South winds 10 to 15 knots. Seas 2 to 4 feet. Dominant period 8 seconds. Inland waters a light chop.
Monday night and Tuesday..South winds 10 to 15 knots. Seas 2 to 4 feet.
Tuesday night..South southwest winds 10 to 15 knots becoming west after midnight. Seas 2 to 4 feet. A chance of showers.
Wednesday..North winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. A chance of showers.
AMZ400 Synopsis For Altamaha Sound Ga To Flagler Beach Fl Out To 60 Nm- 204 Am Est Sat Dec 7 2019
Synopsis.. The pressure gradient will begin to increase this afternoon and tonight between high pressure building east of the appalachians and an inverted trough east of the state of florida. Surface high pressure will build east of the mid atlantic and the inverted trough will lift northward on Sunday. The surface ridge axis will remain south of the area through Tuesday. A cold front will push across the waters on Wednesday, and stall near or just south of the waters through the end of the week.
Gulf stream.. The approximate location of the west wall of the gulf stream as of dec 07, 2019 at 1200 utc... 49 nautical miles east of flagler beach. 58 nautical miles east of saint augustine beach. 64 nautical miles east of jacksonville beach. 85 nautical miles east southeast of st simons island. This data courtesy of the naval oceanographic office.


7 Day Forecast for Marine Location Near St. Augustine Beach, FL
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location: 29.87, -81.26     debug


Area Discussion for - Jacksonville, FL
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FXUS62 KJAX 070703 AFDJAX

Area Forecast Discussion National Weather Service Jacksonville FL 203 AM EST Sat Dec 7 2019

NEAR TERM [Through Tonight].

An area of low pressure was located across the northern Gulf early this morning, and moisture was increasing from the west. This was bringing in stratocumulus clouds in the 3.5-5kft range across interior southeast Georgia and the Suwannee Valley. Mostly clear skies were noted elsewhere, with some Patchy fog noted in Duval County. The cloud cover was keeping temperatures in the 50s across interior southeast Georgia, with 40s elsewhere except in the 50s at the beaches.

The area of low pressure over the Gulf is forecast to weaken and sink south to southeastward as high pressure builds east of the Appalachians today. Low to mid level moisture is forecast to move into the Suwannee Valley in the afternoon, and an isolated shower cannot be ruled out. Highs today will be near normal in the upper 60s to lower 70s.

An inverted trough east of the state of Florida and strong high pressure building over the Mid Atlantic and down the Carolinas will briefly create a tight pressure gradient tonight over the regional waters, and a few coastal showers are possible late in the night at the northeast Florida beaches. Overnight lows will be warmer in the mid 40s to near 50 across interior southeast Georgia, the low to mid 50s across interior northeast Florida, and mid 50s to around 60 at the beaches.

SHORT TERM [Sunday Through Monday].

The influence of high pressure over the region will lessen at the start of the oncoming week, with a southwesterly flow developing ahead of the approaching cold front from out of the northwest. There is a mild chance for showers to develop along the easternmost counties of the forecast area on Monday. Maximum temperatures will increase next week with daily max temps rising into the upper 70s and possible lower 80s on Monday. Overnight low temperatures will have a similar rise with temps rising from out of the 50s on Sunday night into the upper 50s and lower 60s.

LONG TERM [Tuesday Through Saturday].

Prevailing flow will strengthen out of the southwest ahead of the approaching cold front, moving in from out of the northwest. Forecast models are predicting the front to stall out over Georgia, resulting in a prolonged period of convection over northeast Florida and southeast Georgia lasting into next weekend along the frontal boundary. Above average temperatures on Tuesday are expected to drop as the frontal boundary approaches, with temps dropping from out of the lower 80s on Tuesday down into the upper 50s and lower 60s for the remainder of the week, with cooler temperatures occuring in counties behind the frontal boundary. Overnight low temperatures will also cool with the approach of the front, with min temps ranging from the upper 30s to the lower 50s with the coolest temps occuring over inland southeast Georgia.

AVIATION. [Through 06Z Sunday]

Patchy fog is possible at the Duval County TAF sites this morning. Light winds will prevail overnight, with winds becoming northeast 5-10 knots during the day as high pressure sinks south southwestward east of the Appalachians. A couple showers are possible near KGNV in the late afternoon, but probabilities are too low to mention.

MARINE.

The pressure gradient will begin to increase this afternoon and tonight between high pressure building east of the Appalachians and an inverted trough east of the state of Florida. Brief Small Craft Advisory conditions are possible tonight over the offshore southeast Georgia waters. Scattered showers are also possible over the coastal waters. Surface high pressure will build east of the Mid Atlantic and the inverted trough will lift northward on Sunday leading to lighter winds. The surface ridge axis will remain south of the area through Tuesday. A cold front will push across the waters on Wednesday, and stall near or just south of the waters through the end of the week. Small Craft Advisory conditions are forecast late Wednesday into Friday. Scattered to numerous showers are forecast each day.

Rip Currents: Low risk southeast Georgia today and moderate risk on Sunday. Moderate risk of rip currents northeast Florida beaches this weekend.

PRELIMINARY POINT TEMPS/POPS.

AMG 69 46 67 53 77 / 10 10 10 10 10 SSI 66 55 66 57 73 / 10 0 20 10 0 JAX 70 53 71 56 78 / 10 10 20 10 10 SGJ 69 58 72 58 78 / 10 20 40 10 10 GNV 71 53 74 57 78 / 20 20 20 10 0 OCF 72 53 77 57 80 / 10 10 10 0 0

JAX WATCHES/WARNINGS/ADVISORIES. FL . None. GA . None. AM . None.


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SAUF1 - St. Augustine, FL 1 mi38 min N 9.9 G 11 65°F 67°F1020.8 hPa (+0.0)
41117 13 mi38 min 67°F2 ft
GTXF1 - Guana Tolomato Matanzas Reserve, FL 15 mi113 min Calm 52°F 1022 hPa51°F
LTJF1 37 mi50 min 57°F 57°F
MYPF1 - 8720218 - Mayport (Bar Pilots Dock), FL 38 mi56 min N 1.9 G 4.1 59°F 63°F1021.5 hPa
BLIF1 39 mi50 min Calm G 1
DMSF1 39 mi56 min 63°F
NFDF1 41 mi50 min Calm G 1.9

Wind History for I-295 Bridge, St Johns River, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Northeast Florida Regional Airport, FL8 mi42 minNW 310.00 miFair53°F51°F93%1021.2 hPa

Link to 5 minute data for KSGJ

Wind History from SGJ (wind in knots)
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Last 24hrCalmCalmCalmNW3CalmCalmCalmE3SW5E5E6E5E6E3CalmCalmCalmCalmCalmCalmCalmNW4NW3NW3
1 day agoCalmNW3W3CalmCalmNW4N9N8NE7N11NE9NE10NE9NE7NW3CalmCalmCalmCalmCalmCalmCalmCalmCalm
2 days agoW4W6W8W8W8W8NW9NW11
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Tide / Current Tables for St. Augustine Beach, Atlantic Ocean, Florida
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Tide / Current Tables for Crescent Beach, Matanzas River, Florida
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Weather Map
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wmap_A
GEOS Local Image of Southeast    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Jacksonville, FL (3,6,7,8)
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Ground Weather Radar Station Jacksonville, FL
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Disclaimer:
The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerious of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.